Isingeniso kuSakhiwo kanye Nokusebenza kweI-Thin Film Lithium Niobate Electro optic Modulator
An i-electro-optic modulatorngokusekelwe ezakhiweni ezahlukene, ubude bamaza, kanye namapulatifomu e-lithium niobate yefilimu encane, kanye nokuqhathaniswa kokusebenza okuphelele kwezinhlobo ezahlukene zeAma-modulators e-EOMkanye nokuhlaziywa kocwaningo kanye nokusetshenziswa kweama-modulators e-lithium niobate efilimu encanekweminye imikhakha.
1. I-modulator ye-lithium niobate engaguquki
Lolu hlobo lwe-modulator lusekelwe kumphumela omuhle kakhulu we-electro-optic we-lithium niobate crystal futhi luyithuluzi elibalulekile lokufeza ukuxhumana kwe-optical okusheshayo nokude. Kunezakhiwo ezintathu eziyinhloko:
1.1 I-electrode yamagagasi ahambayo i-MZI modulator: Lona umklamo ojwayelekile kakhulu. Iqembu locwaningo lase-Lon č ar e-Harvard University laqala ukuthola inguqulo yokusebenza okuphezulu ngo-2018, kanye nokuthuthuka okulandelayo okuhlanganisa ukulayisha okunamandla okusekelwe kuma-substrate e-quartz (i-bandwidth ephezulu kodwa engahambisani ne-silicon-based) kanye nokuhambisana ne-silicon okusekelwe kuma-substrate hollowing, kufinyelela i-bandwidth ephezulu (>67 GHz) kanye nokudluliswa kwesignali yesivinini esiphezulu (njenge-112 Gbit/s PAM4).
1.2 I-modulator ye-MZI egoqekayo: Ukuze kufushaniswe usayizi wedivayisi futhi kuvumelaniswe namamojula amancane njenge-QSFP-DD, ukwelashwa kwe-polarization, i-cross waveguide noma ama-electrode e-inverted microstructure asetshenziswa ukunciphisa ubude bedivayisi ngesigamu nokufeza i-bandwidth engu-60 GHz.
1.3 I-Modulator ye-Single/Dual Polarization Coherent Orthogonal (IQ): Isebenzisa ifomethi yokuguquguquka ephezulu ukuthuthukisa izinga lokudlulisa. Iqembu locwaningo lwe-Cai e-Sun Yat sen University lithole i-modulator yokuqala ye-on-chip single polarization IQ ngo-2020. I-modulator ye-dual polarization IQ eyakhiwe esikhathini esizayo inokusebenza okungcono, futhi inguqulo esekelwe ku-quartz substrate ibeke irekhodi elilodwa lokudlulisa ubude be-wavelength engu-1.96 Tbit/s.
2. I-modulator ye-lithium niobate yohlobo lwe-resonant cavity type
Ukuze kufezwe ama-modulators e-bandwidth amancane kakhulu namakhulu, kunezakhiwo ezahlukahlukene ze-resonant cavity ezitholakalayo:
2.1 I-Photonic crystal (PC) kanye ne-micro ring modulator: Iqembu locwaningo likaLin eNyuvesi yaseRochester lithuthukise i-photonic crystal modulator yokuqala esebenza kahle kakhulu. Ngaphezu kwalokho, ama-micro ring modulator asekelwe ekuhlanganisweni okungafani kwe-silicon lithium niobate kanye nokuhlanganiswa okufanayo nawo aphakanyisiwe, afinyelela ama-bandwidth e-GHz amaningana.
2.2 I-Bragg grating resonant cavity modulator: kufaka phakathi i-Fabry Perot (FP) cavity, i-waveguide Bragg grating (WBG), kanye ne-slow light (SL) modulator. Lezi zakhiwo zenzelwe ukulinganisela usayizi, ukubekezelelana kwenqubo, kanye nokusebenza, isibonelo, i-2 × 2 FP resonant cavity modulator ifinyelela i-bandwidth enkulu kakhulu edlula i-110 GHz. I-slow light modulator esekelwe ku-Bragg grating ehlanganisiwe yandisa ububanzi be-bandwidth esebenzayo.
3. I-modulator ye-lithium niobate ehlanganisiwe enefilimu encane ehlanganisiwe
Kunezindlela ezintathu eziyinhloko zokuhlanganisa ukuhambisana kobuchwepheshe be-CMOS kumapulatifomu asekelwe ku-silicon kanye nokusebenza okuhle kakhulu kokuguquguquka kwe-lithium niobate:
3.1 Ukuhlanganiswa okuhlukile kohlobo lwebhondi: Ngokubopha ngqo ne-benzocyclobutene (BCB) noma i-silicon dioxide, i-thin film lithium niobate idluliselwa epulatifomu ye-silicon noma ye-silicon nitride, ifinyelele ezingeni le-wafer, ukuhlanganiswa okuzinzile kokushisa okuphezulu. I-modulator ibonisa i-bandwidth ephezulu (>70 GHz, ngisho nedlula i-110 GHz) kanye nekhono lokudlulisa isignali ngesivinini esikhulu.
3.2 Izinto zokuqondisa amagagasi okufakwayo Ukuhlanganiswa okungafani: ukufaka i-silicon noma i-silicon nitride ku-thin film lithium niobate njenge-load waveguide nakho kufeza ukuguqulwa kwe-electro-optic okuphumelelayo.
3.3 Ukuhlanganiswa okuhlukahlukene kokuphrinta kokudlulisa i-Micro (μ TP): Lobu ubuchwepheshe okulindeleke ukuthi busetshenziswe ekukhiqizweni okukhulu, obudlulisela amadivayisi asebenzayo asetshenziselwe kusengaphambili ukuze aqondise ama-chip ngemishini enembile kakhulu, okugwema ukucubungula okuyinkimbinkimbi ngemuva kokucubungula. Busetshenziswe ngempumelelo kumapulatifomu e-silicon nitride kanye ne-silicon, kufinyelela ama-bandwidth amashumi e-GHz.
Ngamafuphi, lesi sihloko sichaza ngokuhlelekile imephu yobuchwepheshe yama-modulators e-electro-optic asekelwe kumapulatifomu e-thin film lithium niobate, kusukela ekulandeleni izakhiwo ze-cavity ezingenayo i-resonant ezisebenza kahle kakhulu kanye ne-bandwidth enkulu, ukuhlola izakhiwo ze-cavity ezincane ze-resonant, kanye nokuhlanganiswa namapulatifomu e-photonic avuthiwe asekelwe ku-silicon. Sibonisa amandla amakhulu kanye nentuthuko eqhubekayo yama-modulators e-thin film lithium niobate ekudluleni enkingeni yokusebenza kwama-modulators endabuko kanye nokufeza ukuxhumana kwe-optical okusheshayo.
Isikhathi sokuthunyelwe: Mashi-31-2026